VulnerabilityModified
CVE-2018-6764
util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.
HIGH 7.8EPSS 0.33%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
util/virlog.c in libvirt does not properly determine the hostname on LXC container startup, which allows local guest OS users to bypass an intended container protection mechanism and execute arbitrary commands via a crafted NSS module.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.33% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-346
- Affected
- redhat/libvirt · debian/debian linux · redhat/virtualization · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://www.ubuntu.com/usn/USN-3576-1Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3113Third Party Advisory
- https://www.debian.org/security/2018/dsa-4137Third Party Advisory
- https://www.redhat.com/archives/libvir-list/2018-February/msg00239.htmlPatch, Third Party Advisory
- http://www.ubuntu.com/usn/USN-3576-1Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3113Third Party Advisory
- https://www.debian.org/security/2018/dsa-4137Third Party Advisory
- https://www.redhat.com/archives/libvir-list/2018-February/msg00239.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.